UCONN BIOLOGY 1108 - CHAPTER 29
TERMS QUESTIONS AND ANSWERS
WITH IN-DEPTH SOLUTIONS –
UPDATED FOR 2026 SUCCESS
Q: What is "Desiccation"? A: Desiccation is excessive water loss or the process
of drying out. This was the primary challenge plants had to overcome when
transitioning from aquatic environments to land.
Q: What defines a "Vascular Plant"? A: A vascular plant is defined by the
presence of specialized conducting tissues: xylem (which transports water) and
phloem (which transports sugars and nutrients).
Q: What are "Bryophytes" and which plants do they include? A: Bryophytes
are a paraphyletic group of nonvascular plants. Because they lack xylem and
phloem, they are generally small and live in moist environments. They include:
Mosses
Liverworts
Hornworts
Q: What is the evolutionary significance of "Lycophytes"? A: Lycophytes are a
monophyletic group of spore-dispersing vascular plants. They are significant
because they are the sister group to all other vascular plants, representing an early
branch in vascular plant evolution.
Q: How do "Ferns and Horsetails" reproduce and grow? A: These are a
monophyletic group of vascular plants that have well-developed leaves but
disperse by spores rather than seeds.
, Q: What distinguishes "Gymnosperms" from other seed plants? A:
Gymnosperms are seed plants whose ovules are not enclosed in a carpel (often
called "naked seeds"). Common examples include pine trees and other conifers.
Q: What are the unique characteristics of "Angiosperms"? A: Angiosperms
are the flowering plants. This monophyletic group of seed plants is characterized
by three specific traits:
1. Flowers
2. Double fertilization
3. Fruits (which develop from the carpel to protect the seeds)
Desiccation Tolerance -ANSWER✔✔A suite of biochemical traits that allow cells
to survive extreme dehydration without damage to membranes or macromolecules
Shoot -ANSWER✔✔The collective name for the leaves, stems, and reproductive
organs, the major above ground organ systems of vascular plants
Root -ANSWER✔✔A major organ system of vascular plants, generally
belowground
Leaf -ANSWER✔✔The principal state of photosynthesis in vascular plants
Epidermis -ANSWER✔✔In mammals, the outer layer of skin, which serves as a
water-resistant, protective barrier; in plants, the outermost layer of cells in a leaf,
young stems (lacking secondary growth), and roots; also, the outer layer of the
cnidarian body
Mesophyll -ANSWER✔✔A leaf tissue of loosely packed photosynthetic cells
TERMS QUESTIONS AND ANSWERS
WITH IN-DEPTH SOLUTIONS –
UPDATED FOR 2026 SUCCESS
Q: What is "Desiccation"? A: Desiccation is excessive water loss or the process
of drying out. This was the primary challenge plants had to overcome when
transitioning from aquatic environments to land.
Q: What defines a "Vascular Plant"? A: A vascular plant is defined by the
presence of specialized conducting tissues: xylem (which transports water) and
phloem (which transports sugars and nutrients).
Q: What are "Bryophytes" and which plants do they include? A: Bryophytes
are a paraphyletic group of nonvascular plants. Because they lack xylem and
phloem, they are generally small and live in moist environments. They include:
Mosses
Liverworts
Hornworts
Q: What is the evolutionary significance of "Lycophytes"? A: Lycophytes are a
monophyletic group of spore-dispersing vascular plants. They are significant
because they are the sister group to all other vascular plants, representing an early
branch in vascular plant evolution.
Q: How do "Ferns and Horsetails" reproduce and grow? A: These are a
monophyletic group of vascular plants that have well-developed leaves but
disperse by spores rather than seeds.
, Q: What distinguishes "Gymnosperms" from other seed plants? A:
Gymnosperms are seed plants whose ovules are not enclosed in a carpel (often
called "naked seeds"). Common examples include pine trees and other conifers.
Q: What are the unique characteristics of "Angiosperms"? A: Angiosperms
are the flowering plants. This monophyletic group of seed plants is characterized
by three specific traits:
1. Flowers
2. Double fertilization
3. Fruits (which develop from the carpel to protect the seeds)
Desiccation Tolerance -ANSWER✔✔A suite of biochemical traits that allow cells
to survive extreme dehydration without damage to membranes or macromolecules
Shoot -ANSWER✔✔The collective name for the leaves, stems, and reproductive
organs, the major above ground organ systems of vascular plants
Root -ANSWER✔✔A major organ system of vascular plants, generally
belowground
Leaf -ANSWER✔✔The principal state of photosynthesis in vascular plants
Epidermis -ANSWER✔✔In mammals, the outer layer of skin, which serves as a
water-resistant, protective barrier; in plants, the outermost layer of cells in a leaf,
young stems (lacking secondary growth), and roots; also, the outer layer of the
cnidarian body
Mesophyll -ANSWER✔✔A leaf tissue of loosely packed photosynthetic cells
